code and adds support to ASN1_TYPE and asn1parse.

support for subject and issuer alt name. Add a new ASN1 macro and fix a
nasty bug that left an ASN1 buffer modified on an error condition with
IMPLICIT tagging.

the main library, but only with printing at present. To see this try:
openssl x509 -in cert.pem -text
on a certificate with some extensions in it.

GeneralizedTime.

This is the result of a "make errors" with the new error building functionality
in place.

of 'make errors' without causing huge re-organisations of files when a new
code is added.

GeneralizedTime. At several points PKIX specifies that GeneralizedTime can be
used but OpenSSL doesn't currently support it. This patch adds several files
and a bunch of functions.

Of interest is the ASN1_TIME structure and its related functions. At several
points certificates, CRLs et al specify that a time can be expressed as a
choice of UTCTime and GeneralizedTime. Currently OpenSSL interprets this
(wrongly) as UTCTime because GeneralizedTime isn't supported. The ASN1_TIME
stuff provides this functionality.

Still todo is to trace which cert and CRL points need an ASN1_TIME and modify
the utilities appropriately and of course fix all the bugs.

Note new OpenSSL copyright in the new file a_time.c. I didn't put it in
a_gentm.c because it is a minimally modified form a_utctm.c .

Since this adds new files and error codes you will need to do a 'make errors'
at the top level to add the new codes.

DSA_free(): this was causing crashes when for example an attempt was made
to handle a (currently) unsupported DH public key. Also X509_PUBKEY_set()i
wasn't checking errors from d2i_PublicKey().

handling to x509.c

zero unused bits.

1. The already released version was 0.9.1c and not 0.9.1b

2. The next release should be 0.9.2 and not 0.9.1d, because
   first the changes are already too large, second we should avoid any more
   0.9.1x confusions and third, the Apache version semantics of
   VERSION.REVISION.PATCHLEVEL for the version string is reasonable (and here
   .2 is already just a patchlevel and not major change).
tVS: ----------------------------------------------------------------------

Allow explicit tag asn macros to handle indefinite length constructed stuff:
without this certain "certificates" can't be read in.